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  1. 23 Nov, 2022 9 commits
  3. 22 Nov, 2022 13 commits
  5. 18 Nov, 2022 2 commits
  7. 16 Nov, 2022 3 commits
  9. 15 Nov, 2022 1 commit
  11. 14 Nov, 2022 1 commit
  13. 10 Nov, 2022 1 commit
  15. 09 Nov, 2022 2 commits
  17. 03 Nov, 2022 4 commits
    • Mark Brown's avatar
      regulator: Add DT support for regulator-output connectors · 3078d0c3
      Mark Brown authored 
      Merge series from Zev Weiss <zev@bewilderbeest.net>:

This series adds support for userspace-controlled regulator-supplied
power outputs [2].  This is an important feature for some kinds of BMC
(baseboard management controller) systems where the BMC provides an
operator with manual control of a set of DC power outputs.

As in a broadly similar patchset that was recently almost merged [0],
this takes the approach of providing support by extending the existing
userspace-consumer regulator driver.  A couple questions about the
userspace-consumer driver came up along the way, however.

First, how (if at all) is it currently being used?  It appears the
last in-tree use of it was removed a bit over two years ago in commit
9d323914 ("ARM: pxa: remove Compulab pxa2xx boards").  Aside from
just adding DT support I've made a couple small tweaks to the driver
in patch 3 that I hope are compatible with any current usage, but
without any extant examples to look at it's kind of hard to say.

Second, how critical is its support for controlling multiple
regulators?  (i.e. its use of regulator_bulk_data and friends instead
of a single struct regulator.)  As far as I can see every in-tree use
of it that's ever existed has used num_supplies = 1.  If it's not
important to retain, patch 1 of this series could be supplanted by one
that instead simplifies the driver slightly by removing that
functionality.

The DT binding added in patch 2 is essentially identical to one I
posted in a previous patchset that had an R-B from Rob [1], but has
had some minor rewording and been moved from the extcon subsystem to
the regulator subsystem.
      3078d0c3
    • Zev Weiss's avatar
      regulator: userspace-consumer: Handle regulator-output DT nodes · 5c51d4af
      Zev Weiss authored 
      In addition to adding some fairly simple OF support code, we make some
slight adjustments to the userspace-consumer driver to properly
support use with regulator-output hardware:

 - We now do an exclusive get of the supply regulators so as to
   prevent regulator_init_complete_work from automatically disabling
   them.

 - Instead of assuming that the supply is initially disabled, we now
   query its state to determine the initial value of drvdata->enabled.
Signed-off-by: default avatarZev Weiss <zev@bewilderbeest.net>
Link: https://lore.kernel.org/r/20221031233704.22575-4-zev@bewilderbeest.netSigned-off-by: default avatarMark Brown <broonie@kernel.org>
      5c51d4af
    • Zev Weiss's avatar
      regulator: Add regulator-output binding · 14b8ad4c
      Zev Weiss authored 
      This describes a power output supplied by a regulator, such as a
power outlet on a power distribution unit (PDU).
Signed-off-by: default avatarZev Weiss <zev@bewilderbeest.net>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221031233704.22575-3-zev@bewilderbeest.netSigned-off-by: default avatarMark Brown <broonie@kernel.org>
      14b8ad4c
    • Zev Weiss's avatar
      regulator: devres: Add devm_regulator_bulk_get_exclusive() · fd184506
      Zev Weiss authored 
      We had an exclusive variant of the devm_regulator_get() API, but no
corresponding variant for the bulk API; let's add one now.  We add a
generalized version of the existing regulator_bulk_get() function that
additionally takes a get_type parameter and redefine
regulator_bulk_get() in terms of it, then do similarly with
devm_regulator_bulk_get(), and finally add the new
devm_regulator_bulk_get_exclusive().
Signed-off-by: default avatarZev Weiss <zev@bewilderbeest.net>
Link: https://lore.kernel.org/r/20221031233704.22575-2-zev@bewilderbeest.netSigned-off-by: default avatarMark Brown <broonie@kernel.org>
      fd184506
  19. 02 Nov, 2022 4 commits
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